Bip39 Checksum. As the 24th is usually a checksum word, a list of 8 valid prospect words are calculated using the Python script 24thword.py. For words that have only three letters, there is no 4th letter. By way of example Using the word “incorporate”, there are no far more letters https://directory-engine.com/listings13058665/bip39-mnemonic-https-linktr-ee-bip39-not-known-facts-about-bip39-mnemonic-generator